07 - Anti Roll Bars - Suspension Tuning in Forza Motorsport

Описание: Keys to Speed presents a multi-part series on how to tune in Forza Motorsport and Horizon. For more tuning guide details visit: https://forzatune.com/guide/the-fully...

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Transcript

During a corner a vehicle will roll or lean because of the flex in the springs and the transfer of weight.

When leaning, the spring on the outside wheel compresses while the spring on the inside wheel extends.

Anti-roll bars - also known as ARBs or sway bars - connect the inside and outside wheels together, forcing the inside wheel to mimic the movements of the outside wheel.

As the two wheels are forced to mimic each other, the car stays “flatter” in the turn.

How does an anti-roll bar work exactly?

ARBs are torsional springs - which is a fancy of way of saying a bar that has some “twist” or give to it.

A stiffer bar will force the inside and outside wheels to mimic each other more closely, which will lead to less body roll.

Likewise, the softer the bar, the less the wheels mimic each other's movements, and we see more body roll.

Keep in mind that ARB’s only affect mid-corner and corner exit, and have no effect on straight-line driving.

You can think of ARBs as ways of adding spring stiffness only when turning.

They should be your first stop for tuning oversteer and understeer. Here are some rules to keep in mind as you tune them...

If you need to reduce understeer reduce front ARB stiffness and…

If you need to reduce oversteer reduce rear ARB stiffness.
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Remember that when tuning, make sure to adjust the end with the problem.

i.e. do not try to reduce oversteer, which is a problem with the rear of a car, by increasing understeer or front ARB stiffness!